微型喷药机构型设计与仿真分析
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摘要
针对三轮高地隙喷药机田间运行稳定性差和后轮轮距调整不方便等问题,设计了万向节动力转向机构、可伸缩车架及后轮转向机构等部件组成的微型高地隙喷药机。对机架进行了仿真模型建立、有限元应力-应变分析和响应曲面拟合优化设计,并对优化后模型进行了模态分析。结果表明:机架在满足性能和强度要求前提下实现了轻量化,整机各个机构匹配性能均满足设计要求,且车体运行平稳,后轮轮距调整方便,有利于三轮高地隙喷药机的应用与推广。
According to the problem that the field operation instability and the rear wheel base adjustment inconvenient of the three wheeled high clearance sprayer,the research design a new- type high clearance sprayer,with the power steering of scalable universal joint,retractable frame,the rear wheel steering mechanism and other components. Meanwhile,the simulation model,the finite element analysis for the stress and strain,response surface fitting optimization design on the sprayer frame have been finished,and the optimized model for modal analysis. Therefore,the results showed that,the frame realized the lightweight on the premise of the demand of performance and stiffness,each mechanism's matching performance of sprayer meet the design requirements,and the research will be good for the popularization and application of the three wheeled high clearance sprayer.
According to the problem that the field operation instability and the rear wheel base adjustment inconvenient of the three wheeled high clearance sprayer,the research design a new- type high clearance sprayer,with the power steering of scalable universal joint,retractable frame,the rear wheel steering mechanism and other components. Meanwhile,the simulation model,the finite element analysis for the stress and strain,response surface fitting optimization design on the sprayer frame have been finished,and the optimized model for modal analysis. Therefore,the results showed that,the frame realized the lightweight on the premise of the demand of performance and stiffness,each mechanism's matching performance of sprayer meet the design requirements,and the research will be good for the popularization and application of the three wheeled high clearance sprayer.
引文
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[6]刘平义,王振杰,李海涛,等.轮距可调式转向机构设计[J].农业机械学报,2015,46(4):63-67.
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[9]杨方飞,韩小进,段垚奇,等.高地隙喷杆喷雾机底盘可靠性试验[J].农业机械学报,2014,45(10):73-77.
[10]王潇楠,何雄奎.喷杆式喷雾机雾滴飘移测试系统研制及性能试验[J].农业工程学报,2014,30(18):56-60.
[2]李锟.高地隙喷药机设计及其变量施药系统研究[D].哈尔滨:哈尔滨理工大学,2015.
[3]黄聪会,马洪亮,江光华.高地隙自走式植保机械喷杆系统结构优化与研究[J].农机化研究,2016,38(2):49-53.
[4]窦静华.高地隙自走式喷雾机轮距可调式转向系统的设计与研究[D].北京:中国农业机械化科学研究院,2012.
[5]王子佳.4YZ-2自走式玉米联合收获机总体设计及关键部件的研究[D].长春:吉林大学,2013.
[6]刘平义,王振杰,李海涛,等.轮距可调式转向机构设计[J].农业机械学报,2015,46(4):63-67.
[7]李燕平,吕新民.农用风机叶轮的有限元分析[J].农机化研究,2012,34(4):207-209.
[8]张艳,张永军.冷挤压组合模具的ANSYS应力分析[J].黑龙江科技学院学报,2010,20(1):73-74.
[9]杨方飞,韩小进,段垚奇,等.高地隙喷杆喷雾机底盘可靠性试验[J].农业机械学报,2014,45(10):73-77.
[10]王潇楠,何雄奎.喷杆式喷雾机雾滴飘移测试系统研制及性能试验[J].农业工程学报,2014,30(18):56-60.